<?php
    // +----------------------------------------------------------------------
    // | ThinkPHP [ WE CAN DO IT JUST THINK ]
    // +----------------------------------------------------------------------
    // | Copyright (c) 2006~2017 http://thinkphp.cn All rights reserved.
    // +----------------------------------------------------------------------
    // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
    // +----------------------------------------------------------------------
    // | Author: liu21st <liu21st@gmail.com>
    // +----------------------------------------------------------------------
    namespace think\response;

    use think\Request;
    use think\Response;
    use think\Session;
    use think\Url;

    class Redirect extends Response {
        protected $options = [];
        // URL参数
        protected $params = [];

        public function __construct($data = '', $code = 302, array $header = [], array $options = []) {
            parent::__construct($data, $code, $header, $options);
            $this->cacheControl('no-cache,must-revalidate');
        }

        /**
         * 重定向传值（通过Session）
         * @access protected
         * @param string|array $name  变量名或者数组
         * @param mixed        $value 值
         * @return $this
         */
        public function with($name, $value = null) {
            if (is_array($name)) {
                foreach ($name as $key => $val) {
                    Session::flash($key, $val);
                }
            } else {
                Session::flash($name, $value);
            }
            return $this;
        }

        public function params($params = []) {
            $this->params = $params;
            return $this;
        }

        /**
         * 记住当前url后跳转
         * @return $this
         */
        public function remember() {
            Session::set('redirect_url', Request::instance()->url());
            return $this;
        }

        /**
         * 跳转到上次记住的url
         * @return $this
         */
        public function restore() {
            if (Session::has('redirect_url')) {
                $this->data = Session::get('redirect_url');
                Session::delete('redirect_url');
            }
            return $this;
        }

        /**
         * 处理数据
         * @access protected
         * @param mixed $data 要处理的数据
         * @return mixed
         */
        protected function output($data) {
            $this->header['Location'] = $this->getTargetUrl();
            return;
        }

        /**
         * 获取跳转地址
         * @return string
         */
        public function getTargetUrl() {
            return (strpos($this->data, '://') || 0 === strpos($this->data, '/')) ? $this->data : Url::build($this->data, $this->params);
        }
    }
